Question Problems with Date Format and "Unknow" Fields

Hi again,
I have splitted my last topic in the right section.

I have this config on my site Rx8.it
Joomla 1.5.25
Jomsocial 2.4.1
Kunena 1.7.1

Now, I have 1 big problem.

All the dates are now visible. Posted on, last visit date etc... are "Sconosciuto", "Unknow" in english. When I look in the admin area, on the field Time Format I see
Now visible
Unknow
Unknow
Unknow
In the database, when I select the second, I can see "AGO" data.

Tried to change the template with the standard, tried to reinstall and tried to change language but nothing solved.

Anybody can tell me where is the file (or files) where the software kunena try to get the Date Format?

Thank you

Database collation check: The collation of your table fields are correct

Legacy mode: Disabled | Joomla! SEF: Disabled | Joomla! SEF rewrite: Disabled | FTP layer: Enabled |

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htaccess: Missing | PHP environment: Max execution time: 300 seconds | Max execution memory: 128M | Max file upload: 100M

Joomla default template details : rt_tachyon_j15 | author: RocketTheme, LLC | version: 1.5.9 | creationdate: December 12, 2011

Kunena default template details : Aqua Social | author: Tessak22 | version: 1.6.x | creationdate: 2010-04-9

Kunena version detailled: Installed version: 1.7.1 | Build: 5162 | Version name: UnderUret | Kunena detailled configuration:

Warning: Spoiler!

[th]Kunena config settings:[/th]

board_offline	0
board_ofset	0.00
enablerss	1
enablepdf	1
threads_per_page	20
messages_per_page	6
messages_per_page_search	15
showhistory	1
historylimit	6
shownew	1
jmambot	1
disemoticons	0
template	Aqua-Social
showannouncement	0
avataroncat	1
catimagepath	category_images/
showchildcaticon	1
annmodid	62
rtewidth	450
rteheight	300
enableforumjump	1
reportmsg	1
username	1
askemail	0
showemail	0
showuserstats	1
showkarma	1
useredit	1
useredittime	0
useredittimegrace	600
editmarkup	1
allowsubscriptions	1
subscriptionschecked	1
allowfavorites	1
maxsubject	50
maxsig	300
regonly	0
changename	0
pubwrite	0
floodprotection	0
mailmod	0
mailadmin	0
captcha	0
mailfull	1
allowavatar	1
allowavatarupload	1
allowavatargallery	1
avatarquality	65
avatarsize	2048
allowimageupload	0
allowimageregupload	1
imageheight	800
imagewidth	800
imagesize	500
allowfileupload	0
allowfileregupload	1
filetypes	txt,rtf,pdf,zip,tar.gz,tgz,tar.bz2
filesize	12000
showranking	0
rankimages	0
avatar_src	fb
fb_profile	fb
pm_component	no
userlist_rows	30
userlist_online	1
userlist_avatar	1
userlist_name	0
userlist_username	1
userlist_posts	1
userlist_karma	1
userlist_email	0
userlist_usertype	0
userlist_joindate	1
userlist_lastvisitdate	1
userlist_userhits	1
latestcategory	0
showstats	1
showwhoisonline	1
showgenstats	1
showpopuserstats	1
popusercount	5
showpopsubjectstats	1
popsubjectcount	5
usernamechange	0
rules_infb	1
rules_cid	1
help_infb	1
help_cid	1
showspoilertag	1
showvideotag	1
showebaytag	1
trimlongurls	1
trimlongurlsfront	40
trimlongurlsback	20
autoembedyoutube	1
autoembedebay	1
ebaylanguagecode	it-it
fbsessiontimeout	1800
highlightcode	0
rss_type	topic
rss_timelimit	month
rss_limit	100
rss_included_categories
rss_excluded_categories
rss_specification	rss2.0
rss_allow_html	1
rss_author_format	name
rss_author_in_title	1
rss_word_count	0
rss_old_titles	1
rss_cache	900
fbdefaultpage	recent
default_sort	asc
alphauserpointsnumchars	20
sef	1
sefcats	0
sefutf8	1
showimgforguest	1
showfileforguest	1
pollnboptions	4
pollallowvoteone	1
pollenabled	1
poppollscount	5
showpoppollstats	1
polltimebtvotes	00:15:00
pollnbvotesbyuser	100
pollresultsuserslist	1
maxpersotext	50
ordering_system	replyid
post_dateformat	ago
post_dateformat_hover	none
hide_ip	1
js_actstr_integration	0
imagetypes	jpg,jpeg,gif,png
checkmimetypes	1
imagemimetypes	image/jpeg,image/jpg,image/gif,image/png
imagequality	80
thumbheight	32
thumbwidth	32
hideuserprofileinfo	put_empty
integration_access	jomsocial
integration_login	jomsocial
integration_avatar	jomsocial
integration_profile	jomsocial
integration_private	jomsocial
integration_activity	jomsocial
boxghostmessage	0
userdeletetmessage	0
latestcategory_in	1
topicicons	1
onlineusers	1
debug	0
catsautosubscribed	0
showbannedreason	1
version_check	1
showthankyou	1
showpopthankyoustats	1
popthankscount	5
mod_see_deleted	0
bbcode_img_secure	text
listcat_show_moderators	1
lightbox	1
activity_limit	0
show_list_time	0
show_session_type	0
show_session_starttime	0
userlist_allowed	0
userlist_count_users	0
enable_threaded_layouts	0
category_subscriptions	post
topic_subscriptions	every
pubprofile	1
thankyou_max	10
email_recipient_count	0
email_recipient_privacy	bcc
email_visible_address	[email protected]
captcha_post_limit	0

Third-party components: Jomsocial 2.4.1

Third-party SEF components: None

Plugins: System - Mootools Upgrade: Enabled | System - Mootools12: Disabled

Modules: None

These look to be problems caused by the Aqua Social template. Please contact the author of that template to resolve your problems or use the Blue Eagle template designed for K 1.7.1 instead.